Revision 1803121

Fix data validation value list evaluation

One of my users found that my initial implementation was lacking a core distinction - most evaluations expect a single result, and "unwrap" 2/3D ValueEval results to a single value based on the input row/column.

However, data validation list formulas explicitly are expected to return a 2D ValueEval.  This worked when the formula was simple and evaluated to a single Ptg, but only returned one value when the formula was more complex, or referenced a named range defined as a complex formula.

This change teaches WorkbookEvaluator about the distinction, by way of a new attribute for FormulaType.

There is room for discussion over how it is implemented, but this works for me.

Includes the failing workbook we had as a new unit test.

While I was in FormulaType I went ahead and removed the deprecated, unused, and redundant code marked for removal in 3.17.